Plate XIIL 



Fio-. I. Brisasfcr (Schizaster) fragilis, 3™'". Abactinal side. The number of plates in the paired ambu- 

 lacra could not be made out with certainty. 'S/i- 

 _ 2. — — 2"'". Abactinal side. The number of plates in the paired ambu- 



lacra not quite certain, likewise the upper plates of the paired 

 interambulacra and the plates of the anal area a little uncertain. 



— 3. — — — 2-5"'™. Abactinal side. '7/i. 



_ 4. _ — ~ 2""". Actinal side. The plates of the three anterior ambulacra 



are a little uncertain, ^o^j. 



_ ^. — — — 3-8""". Abactinal side. The number of plates in the paired am- 



bulacra not quite certain, 's/j. 



_ 6. — — — 4'5'""'- Actinal side. '3/j. 



— 7. — • — — — Side view. '3/,. 



— 8. — — — — Abactinal side. '3/,. 



— g. — — — 3™™. Side view. '? 1. 



— 10. — — — 5'5'"" Abactinal side, "/i- 



— II. — — — 6-6""". Actinal side. 9/,. 



— 12. — — — — Abactinal side. 9/,. 



— 13. - - - 7-5'"™. - - 7x. 



— 14. — — — 9"™. — — 7i- 



— 15. — — — I ['•■". — — 5/i- 



— 16 — 20. — — — Abactinal side. 3-5/ 



